205985-49-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205985-49-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,9,8 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 205985-49:
(8*2)+(7*0)+(6*5)+(5*9)+(4*8)+(3*5)+(2*4)+(1*9)=155
155 % 10 = 5
So 205985-49-5 is a valid CAS Registry Number.
205985-49-5Relevant articles and documents
Synthesis of 4-amino-3-quinolinesulfonic acids and 4-aminoquinolines
Skrzypek, Leszek
, p. 71 - 78 (2007/10/03)
The hydrolysis of 4-chloro-3-quinolinesulfonyl chloride (1) gives 4-chloro-3-quinolinesulfonic acid (2) or 1,4-dihydro-4-oxo-3-quinolinesulfonic acid (3). Compound (2) reacts with primary and secondary aliphatic or primary aromatic amines to give 4-amino-